Silence a gcc warning (false positive).
Silence a gcc warning (false positive).

This fixes https://github.com/sctplab/usrsctp/issues/83

sctplab/usrsctp,CoolmanCZ/usrsctp,JlnWntr/usrsctp,weinrank/usrsctp,faithfracture/usrsctp,CoolmanCZ/usrsctp,weinrank/usrsctp,sctplab/usrsctp,CoolmanCZ/usrsctp,sctplab/usrsctp,JlnWntr/usrsctp,faithfracture/usrsctp,CoolmanCZ/usrsctp,JlnWntr/usrsctp,faithfracture/usrsctp,weinrank/usrsctp